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A method of preparing a polyferricsulfate water purifier

An iron water purifying agent and a technology for polymerizing sulfuric acid, which are applied in chemical instruments and methods, water pollutants, water/sewage treatment, etc., can solve the problems of low cost, fast purification speed, and difficult to treat pyrite slag, and achieve Low cost, fast water purification, and the effect of reducing the content of harmful substances

Inactive Publication Date: 2017-02-15
JIANGMEN JIANGHAI WEI CLEAN WATER MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to make up for the deficiencies in the prior art, the present invention provides a polymeric ferric sulfate water purifying agent and its preparation method. The water purifying agent solves the problem that the pyrite slag is difficult to handle, and it can effectively remove the polluting components in the water , and the purification speed is fast and the cost is low

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] The polyferric sulfate water purifying agent is configured according to the following parts by weight: 50 parts of pyrite slag, 15 parts of diatomaceous earth, 200 parts of sulfuric acid, 10 parts of scrap iron chips, and 5 parts of sodium nitrite.

[0020] The preparation method of above-mentioned polyferric sulfate water purifier comprises the following steps:

[0021] (1) Grinding the pyrite slag and diatomite to 200 mesh, set aside;

[0022] (2) Add sulfuric acid with a mass fraction of 75% into a reactor with a pressure of 0.5Mpa and heat to 250°C;

[0023] (3) Add the powder obtained in step (1) into the reaction kettle, stir for 2 hours, cool down to 80°C for leaching with water, and filter to obtain the leaching solution;

[0024] (4) Add iron scraps to the leaching solution, heat to 90°C, and stir for 4 hours to obtain a ferrous sulfate solution;

[0025] (5) The ferrous sulfate solution is cooled to precipitate ferrous sulfate crystals;

[0026] (6) Add sul...

Embodiment 2

[0029] The polyferric sulfate water purifying agent is configured according to the following parts by weight: 80 parts of pyrite slag, 20 parts of diatomaceous earth, 300 parts of sulfuric acid, 15 parts of scrap iron filings, and 7 parts of sodium nitrite.

[0030] The preparation method of above-mentioned polyferric sulfate water purifier comprises the following steps:

[0031] (1) Grinding pyrite slag and diatomite to 300 mesh, set aside;

[0032] (2) Add sulfuric acid with a mass fraction of 70% into a reactor with a pressure of 0.3Mpa and heat to 300°C;

[0033] (3) Add the powder obtained in step (1) into the reaction kettle, stir for 2 hours, cool down to 80°C for leaching with water, and filter to obtain the leaching solution;

[0034] (4) Add iron scraps to the leaching solution, heat to 90°C, and stir for 4 hours to obtain a ferrous sulfate solution;

[0035] (5) The ferrous sulfate solution is cooled to precipitate ferrous sulfate crystals;

[0036] (6) Add sulfu...

Embodiment 3

[0039] The polyferric sulfate water purifying agent is configured according to the following parts by weight: 100 parts of pyrite slag, 25 parts of diatomaceous earth, 400 parts of sulfuric acid, 20 parts of scrap iron chips, and 10 parts of sodium nitrite.

[0040] The preparation method of above-mentioned polyferric sulfate water purifier comprises the following steps:

[0041] (1) Grinding the pyrite slag and diatomite to 400 mesh, set aside;

[0042] (2) Add sulfuric acid with a mass fraction of 80% to a reactor with a pressure of 0.6Mpa and heat to 350°C;

[0043] (3) Add the powder obtained in step (1) into the reaction kettle, stir for 2 hours, cool down to 80°C for leaching with water, and filter to obtain the leaching solution;

[0044] (4) Add iron scraps to the leaching solution, heat to 90°C, and stir for 4 hours to obtain a ferrous sulfate solution;

[0045] (5) The ferrous sulfate solution is cooled to precipitate ferrous sulfate crystals;

[0046] (6) Add sul...

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Abstract

A method of preparing a polyferricsulfate water purifier is disclosed. Raw materials include sintered pyrite slag, diatomite, sulfuric acid, scrap iron and sodium nitrite. The method achieves effective utilization of the sintered pyrite slag, turns waste into things of value, and overcomes the problem that the sintered pyrite slag is difficult to treat. The water purifier can effectively treat a plurality of pollutants in water and can significantly reduce contents of harmful compounds such as heavy metals in water. The water purifier is prepared mainly from the sintered pyrite slag and the diatomite so that the water purifier is low in cost and free of generation of secondary pollution. The water purifier is high in adsorptive power and has characteristics of good water purification effects and a high water purification speed.

Description

technical field [0001] The invention belongs to the field of water treatment, and in particular relates to a preparation method of a polyferric sulfate water purifying agent. Background technique [0002] At present, my country's industrial sulfuric acid production is mainly obtained by roasting pyrite ore into sulfur dioxide, followed by purification, catalytic oxidation, and absorption. During the roasting process, a large amount of pyrite slag is produced, the main components of which are iron oxide, aluminum oxide, silicon dioxide, calcium oxide, magnesium oxide, lead, zinc, selenium, arsenic, phosphorus, etc. , not only occupies land, pollutes the environment, but also causes groundwater pollution, which has always been one of the difficult problems for sulfuric acid enterprises. The iron oxide in pyrite slag is one of the raw materials for preparing polymeric ferric sulfate water purifying agent. Therefore, how to use pyrite slag to prepare polymeric ferric sulfate wa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F1/00C02F1/28C02F101/20
CPCC02F1/00C02F1/281C02F2101/20
Inventor 杨炯辉
Owner JIANGMEN JIANGHAI WEI CLEAN WATER MATERIALS CO LTD
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